Do you ever nip to the loo only to find your pet staring at you—or scratching at the door? To them, the bathroom is a total mystery: you vanish for ages, there are odd water sounds, and strange gadgets everywhere. Of course they want a nosy!

And who knows—maybe they’re protecting you. Here are 5 likely reasons your little shadow follows you to the bathroom:

• Territory: A closed door interrupts their territory, so they want to keep it marked.

• Curiosity: A shut bathroom feels mysterious and makes them want to explore.

• Protection: They think you’re vulnerable and want to guard you.

• Playground: Water sounds, toilet paper, and new objects make it fun.

• Companionship: They love and trust you, so they want to stay close.